Driving box and spring saddle



Sept. 27,1921,

W. OJMOODY DRIVING BOX AND SPRING SADDLE 'Filed Nov. 18. 1925 2 Sheets-Sheet 1:

.' 1,643 312 Sgpt. 27, 1927. w. o MOODY DRIVING BOX AND SPRING SADDLE Filed Nov. 18. 1925 2 Sheets-Sn eet 2 Patented Sept. 27, 1927.

UNITED STATES.

WILLIAM OTIS MO ODYJXF LA GRANGE, ILLINOIS.

PATENT or FICE.

DRIVING BOX AND seams SADDLE.

Application filed November 18, 1925. Serial No. 69,769. I

bearing surface on the box, prevent rocking of the saddle in service, and insure a constant or exact distance from the spring seat on the saddle to the center of the axle.

It should be understood that in the conventional arrangement heretofore used the legs of the driving box saddle vare fitted into recesses cast in the top of the driving box. The bot-tom of these recesses, of course, cannot be finished except by chipping, an operation which, as is well known, does not lend itself to accurate work. I

I overcome the foregoing diflicul ty and attain the advantages'mentioned by providing a driving box-and saddle structure in which the meeting or bearing faces or surfaces are accurately machined.

I' have illustrated the invention in preferred form in the accompanying drawings, wherein Y Fig. 1 is a cross section through a driving axle looking outwardly toward the driving box and the'driving box saddle with -a certain portion of the upperp'art of the driving box broken away and shown in section;

Fig. 2 is an enlarged view showing the top of the box in longitudinal section with the legs of the driving saddle cooperating' therewith;

' Fig. 3 is a plan section through the legs of thefsaddle showin themanner in which they fit into the driving box,

Figs. 4 and 5 are similar respectively to Figs. 2 and 3 but illustrate a slight modification of the invention.

In the drawings the driving box 1 is shown mounted within the pedestal jaws 2 and 3 with-the pedestal binder 4 therebelow.

In the top of the box is a hollow or depressed portion 5 the lateral edges 6 of which are accuratelymachin'ed. The'saddle' d with its legs 7 cooperates with the recess 5 and the machined surfaces 6 in the following manner. The bottom 8 of each legis accurately machined to cooperate with'the machined surfaces 6. Near the bottom the legs 7 inwardly and downwardly projecting positioning lugs 9 extend into the sp' 1 g Of the de' pression 5. j It will thus be seen that the meeting or ace between bearing surfaces between the saddle and the box are machined surfaces which can be made as accurate as desired, the lugs 9 simply serving to position the saddle. on the box without in any way helping to carry the load by bearing on the bottom of the recess 5.

In this manner the saddle can be given an increased bearing surface on the box,

rockin will be prevented, and the distance from t e. spring seat 11 to the center of the axle 12 can always be maintained an exact distance. The description so far has ap the corresponding machined bearing face 16 on the top of the box 1. The net result is exactlythe same as in the first type and in both types the, projection from the saddle into the recess in the top of the box is simply for positioning purposes.

I claim 1. A driving boxand a spring saddle having machined bearing faces and 'interengaging positioning'means out of the plane of the machined surfaces.

2. The combination of a locomotive driving .box having a machined saddle bearing surface, a spring saddle having a machined surface cooperating with that on the box,

and positioning means on box and saddle out of the plane of the machined surfaces.

3. The combination of a driving box having a recess in its upper surface, a machined bearing face adjacent said recess, a spring saddle having a machined lower face adapted to bear on the machined face of the box, and apositioninglug on the saddle projectin own past the machined faces into said recess.

4. The combination of a drivingbox, a spring saddle, a machined bearing face on thebox, an opposed machined bearing face on the saddle, and interengag'ing positioning means on box and saddle.

In testimony whereof, I. have hereunto signedmy'name. y

' WILLIAM OTIS MOODY. 

